In this case Sir
Hugh had greatly perplexed his
chief builder
by
demanding that he should make a window measuring one foot on every side
and divided by bars into eight lights, having all their sides
equal.

The
illustration will show how this was to be
done.
It will be seen that if
each side of the window measures one foot, then each of the eight
triangular lights is six inches on every side.

"Of a truth, master
builder," said De Fortibus
slyly to the
architect, "I
did not tell thee that the window must be square, as it is most certain
it never could be."